[PATCH 1/3] Revert "i2c: qcom-cci: Remove unused struct member cci_clk_rate"

[Loic Poulain]

This reverts commit b641af684fc28a07bee9c808eb6c433f9d9bcec6.

The cci_clk_rate field is needed to enforce the correct CCI clock rate
at probe time. The hw_params timing values are in clock ticks and were
calibrated for a specific frequency per hardware variant, so running at
the wrong rate would violate I2C timing specifications.

Signed-off-by: Loic Poulain <loic.poulain@xxxxxxxxxxxxxxxx>
---
 drivers/i2c/busses/i2c-qcom-cci.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/i2c/busses/i2c-qcom-cci.c b/drivers/i2c/busses/i2c-qcom-cci.c
index 4d64895a9e9e4e0bd5e0ccb5c3cc04b282b1e4d5..19e4719f13b29b2cf60e113565b1b63f19d0e669 100644
--- a/drivers/i2c/busses/i2c-qcom-cci.c
+++ b/drivers/i2c/busses/i2c-qcom-cci.c
@@ -117,6 +117,7 @@ struct cci_data {
 	unsigned int num_masters;
 	struct i2c_adapter_quirks quirks;
 	u16 queue_size[NUM_QUEUES];
+	unsigned long cci_clk_rate;
 	struct hw_params params[3];
 };
 
@@ -668,6 +669,7 @@ static const struct cci_data cci_v1_data = {
 		.max_write_len = 10,
 		.max_read_len = 12,
 	},
+	.cci_clk_rate =  19200000,
 	.params[I2C_MODE_STANDARD] = {
 		.thigh = 78,
 		.tlow = 114,
@@ -701,6 +703,7 @@ static const struct cci_data cci_v1_5_data = {
 		.max_write_len = 10,
 		.max_read_len = 12,
 	},
+	.cci_clk_rate =  19200000,
 	.params[I2C_MODE_STANDARD] = {
 		.thigh = 78,
 		.tlow = 114,
@@ -734,6 +737,7 @@ static const struct cci_data cci_v2_data = {
 		.max_write_len = 11,
 		.max_read_len = 12,
 	},
+	.cci_clk_rate =  37500000,
 	.params[I2C_MODE_STANDARD] = {
 		.thigh = 201,
 		.tlow = 174,

-- 
2.34.1